Temporary binder for sheets of paper and the like



March 16, 1937. F, B BOLTON 2,074,316

TEMPORARY BINDER FOR SHEETS OF PAPER AND THE LIKE Filed Oct. 16, 1934 FEAM/C/S B BOL TON Patented Mar. 16, 1937 TEIVIPORARY BINDER FOR, SHEETS OF PAPER, AND THE LIKE Francis Basil Bolton, Brisbane, Australia Application October 16, 1934, Serial No. 748,470 In Australia December 18, 1933 2 Claims.

The object of this invention is to provide means whereby sheets of paper, such as letters and invoices, newspapers, catalogues and the like may be temporarily bound, and whereby such binding will enable sheets to be easily and quickly withdrawn or inserted. in the binding in any selected position, and whereby the binder when locked upon the sheets will hold them tightly, and they may be quickly released when required.

The invention primarily resides in the employment of two back plates, one having its sides for a short distance turned in to form parallel guides wherein the other plate may slide enabling variation of the depth of the back. Each back plate at its outer end has an anchor plate at right angles to it; one anchor plate has two or more rods and the other anchor plate two or more tubes, which rods and tubes are parallel with the back plates and are telescopic. Means may be provided for limiting the travel of the back plates and further means may be provided where? by such limiting means may be released to enable the two: back plates and attached parts to be taken apart.

The invention will now be described with reference to the accompanying drawing, wherein:-

Figure 1 is a pictorial view of a preferred construction of binder with covers;

Figure 2 is a pictorial view of the binder in extended position;

Figure 3 is a detail view of the back plates together with rods and tubes and means for restricting their sliding movement;

Figure 4 is a detail view showing a modification of the lower anchor plate adapted for hinging to the cover.

The covers A may be of cardboard, wood or other suitable material, and as shown in Figure 1 may have four hinges A1. The lower anchor plate B is integral with back plate B1, and upper anchor plate C is integral with back plate C1. Lower anchor plate B is secured to cover A by rivets or other suitable means and the inturned edges B2 of back plate'B1 act as guides for back plate G1 which is free to move longitudinally within a limited distance. A string D provided with enlarged stop piece or projection D1 is secured at one end D2 to back plate B1 and lies in a slot therein so that normally the projection D1 contacts with the end of slot C2 in back plate C1 when in fully extended position (see Figure 3) By depressing projection D1 behind the end of slot C2 the back plate C1 may be taken completely apart from back plate B1. Rods E are secured at right angles to lower anchor plate B,

and tubes F are secured to upper anchor plate C, the latter tubes F being slotted at F1 and adapted to telescope with the rods E which are provided with a series of teeth E1. A movable plate G provided with holes G1 is slidably mounted on rods E and tubes F. The holes G1 have slots G2 extending laterally therefrom as shown in Fig. 2 and slits G3 are provided to render one wall of the slots G2 free to move. This one wall provides a struck-up spring-like tongue to resiliently receive the rods and tubes in slot G2. With this construction, the plate G may be longitudinally displaced to shift the rods E and tubes F from the holes G1 partially into the slots G2 which enlarge, due to the resiliency of the one wall afforded by slit G3. When in this position, the edge of slot G2 lies between teeth E1 and locks plate G against movement alongthe rods and tubes. The holes G1 are of such diameter relative to rods E and tubes F that when the latter are in the holes G1, the plate will be free to move along the rods and tubes. At this point, it will be noted that the upper anchor plate 0 is provided with opening E2 to accommodate rods E and teeth E1. The spring plate I-I secured to anchor plate B is provided to force papers up against the plate G and maintain it in contact with teeth E1 when locked. As shown in Figure 1 a locking bar casing J is secured to the cover and has holes J1 adapted to register with the extended ends of rods E when the covers are folded together and the rods E and tubes F are fully telescopedQ A locking bar J2 sliding within casing J has holes J3 also in register with holes J1.

In use the binder is-preliminarily opened as in Figure 1 by sliding bar J2 back and disengaging the sides of slots J3 therein from the spaces between teeth E1 on rods E. The cover is thrown back and back plates B1 and C1 are allowed to lie against the cover back so that the lower anchor plate B and upper anchor plate C are erect and rods E and tubes F are horizontal. This is possible owing to the four hinges A1 in the cover, but may be accomplished by hinging the lower anchor plate B at one side instead of fastening it as previously described (see Figure 4). The locking plate G is moved laterally so that the spring controlled slots G2 disengage the teeth E1 on rods E, said plate G then being taken up towards upper anchor plate C for the time being. The upper anchor plate C is extended away from the lower anchor plate B by rods E sliding in tubes F and back plate 01 sliding in back plate B1 until stopped by projection D1 on spring D coming into contact with the end of slot and B allows ample room for manipulation of.

the papers in filing them in proper position, and that when the space is mad'enormal by closing the upper and lower anchor plates B and C together and pressing the papersdown by plate. G. and locking them by sliding said plate al'ong until spring controlled slots G2 engage teeth E1 a very firm and secure binding is effected.

I claim:

1. A loose leaf binder comprising a pair of hinged covers, an upper and lower anchorplatemounted on one ofsaid covers, a back plate extending substantially perpendicular from eaclr of said anchor plates adapted to engageeach other in reciprocable relation, longitudinal slots'in each of said back plates adapted to normally register witheach other, a spring tongue secured at one end of one of said slots, a projection at one end of said tongue adapted to ride in said other slot and to maintain the contact between said plates when in extended position, a plurality of rods and corresponding tubes extending substantially perpendicular from said anchor plates and adapted to telescope, teeth on each of said rods and a cooperating slot in each of said tubes, said teeth adapted to project through said slots, slots in said upper anchor plate for penetration by said rods, a locking bar having combined holes and rcsilient sided slots, the former for accommodating said rods and tubes and the latter for engaging said teeth when said bar is moved longitudinally, and a fiat spring secured to said lower. anchorv plate and adapted to press upwards against the material to be inserted in said loose leaf binder.

2; A loose leaf binder according to claim 1, wherein the ends of said rods are slotted and adapted to pass through said tubes and through openings of said upper anchor plate and wherein theother of said covers is providedwitha casing, a sliding bar in the casing having holes respectively, for accommodating the extended rod ends and for engaging the slots in the ends of said rods.

FRANCIS BASIL BOLTON. 

